Cap member for fasteners



Patented Jan. 2l, 1936 UNITED STATES PATENT OFFICE CAP MEMBER FOR FASTENERS Application April 8, 1935, Serial No. 15,233

4 Claims.

My invention aims to provide improvements in cap members for attachment of fasteners to supporting structures.

In the drawing which illustrates a preferred embodiment of my invention:

Figure 1 is a plan view of my improved cap member;

Fig. 2 is a section of my cap member taken along the line 2 2. of Figure 1;

Fig. 3 is a bottom plan view of my cap member;

Fig. 4 is a sectional view of the component parts of my cap member before assembly; and

Fig. 5 is a sectional view of my improved cap member with the parts in position for the nal assembling step.

I have taken as an example of my invention a celluloid cup-shaped covering for an eyelet, however, it is understood that I do not limit myself thereby, but realize that my celluloid covering and assembling method is adaptable to many other forms of fastener and like cap members.

Referring to the drawing, Fig. 4 shows the unassembled parts of my fastener cap member including an eyelet l having a hollow shank 2 and a circular flanged base 3, a metal reinforcing disk 4 and a circular cup-shaped celluloid cap 5 having a side wall 6. The cap`5 may be made of any other suitable material which will crimp and hold the parts in assembly.

After the parts, as shown in Fig. 4, have been formed, they may be assembled in any suitable manner, but I have found that the method which produces the most satisfactory result is to place the reinforcing disk al in the cup-shaped cap 5 and then place the eyelet I on top of the disk 4 with the result that the side wall 6 of the cap will extend beyond the inclosed disk 4 and the eyelet base flange 3 as shown in Fig. 5'. Then, 40 by a suitable mechanism, the side Wall E5 is crimped inwardly thereby causing the reinforcing disk 4 and the eyelet I to be held in assembled relationship with the cap 5, as shown in Fig. 2. Thus the cap 5 provides the sole means for holding the parts assembled.

In forming the cup-shaped caps, I preferably use heated dies when celluloid and the like materials are employed, and I preferably use heated dies in crimping over the side wall 6 due to the thermoplastic qualitiesof celluloid materials.

While I have illustrated and described a preferred embodiment of my invention, I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

Iclaim: lwfe,

l, A cap member for fasteners including two superposed metal parts and a non-metallic cover, said cover having a peripheral portion turned inwardly whereby said cover provides the only means holding the parts in assembled relation.

2. A cap member for fasteners including a metal part, designed to be engaged with another part of a fastener member, a reinforcement part superposed upon said first part, and a celluloid cover, said celluloid cover having a peripheral portion turned inwardly to hold the parts in assembled relation.

3. A cap member for fasteners including a fastener-receiving part, a metal reinforcement disk superposed upon said fastener-receiving part, and a celluloid cover, said cover having a peripheral portion turned inwardly to hold the parts in assembled relation.

4. A cap member for fasteners including a flanged eyelet, a metal reinforcement disk superposed upon the ange of said eyelet, and a nonmetallic cover of thermo-plastic material, said cover having a peripheral portion turned inwardly to hold the parts in assembled relation.

CHARLES W. HATCH. 

